Examine the reversible reaction. 2so2 + o2 ⇌ 2so3 if the reaction is at chemical equilibrium, what will be the effect of adding more molecules of so3? the rate of the forward reaction will increase, which will cause reactants to form faster and the balance of the system to shift to the left. the rate of the reverse reaction will increase, which will cause reactants to form faster and the balance of the system to shift to the left. the rate of the forward reaction will increase, which will cause products to form faster and the balance of the system to shift to the right. the rate of the reverse reaction will increase, which will cause products to form faster and the balance of the system to shift to the right.

Answer is: The rate of the reverse reaction will increase, which will cause reactants to form faster and the balance of the system to shift to the left.

According to Le Chatelier's Principle the position of equilibrium moves to counteract the change.

According to Le Chatelier's principle: if the concentration is changed, that will shift the equilibrium to the side that would reduce that change in concentration.  

The equilibrium shift to the left, so more reactants will be produced.

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.